Arctic Gravity and Bathymetric Data Acquisition Over the Arctic Mid-Ocean Ridge and the Lomonosov Ridge

摘要9623170科克利基金被要求支付在北冰洋获取重力和水深数据的费用，用于研究北冰洋中脊(AMOR)和邻近的大陆地壳狭长地带--洛蒙诺索夫海脊。在物理海洋学计划的配合下，我们希望收集更多跨越Lomonosov海脊和Amor的更长的水深和重力异常剖面。这些数据与以前海底科学巡航收集的数据相结合，将使人们能够在作业区内的盆地大部分地区建立区域比例尺地图。板块构造向北冰洋盆地的推进只到达了洛蒙诺索夫海脊。北冰洋中脊是大西洋中脊的北部延伸。它可能是地球上扩张速度最慢的山脊。大约在58 Ma左右，AMOR向北冰洋的传播将洛蒙诺索夫海脊与欧亚大陆的北缘分开。这种分离一直持续到现在。在这项研究期间制作的地图将用于确定海脊的横向结构(半地堑边界断层和转换带的几何形状)和阿莫尔山的形态。这些区域线还将用于研究洛蒙诺索夫海脊和阿莫尔海脊的均衡补偿，以及确定从洛蒙诺索夫海脊到邻近神秘的阿尔法-门捷列夫海脊的过渡。

Abstract 9623170 Coakley Funds are requested to cover the costs of gravity and bathymetry data acquisition in the Arctic Ocean for a study of the Arctic Mid Ocean Ridge (AMOR) and the adjacent sliver of continental crust, the Lomonosov Ridge. In concert with the physical oceanographic program, we would like to collect additional long bathymetric and gravity anomaly profiles across the combined Lomonosov Ridge and AMOR. This data, combined with the collected on previous submarine science cruises, will permit the construction of regional scale maps across much of the basin within the operational area. The advance of plate tectonics into the Arctic Ocean basin has reached only to the Lomonosov Ridge. The Arctic Mid Ocean Ridge is the northern extension of the Mid Atlantic Ridge. It is perhaps the slowest spreading ridge on earth. Propagation of the AMOR into the Arctic Ocean separated the Lomonosov Ridge from the northern edge of Eurasia beginning at about 58Ma. This separation has continued up until the present time. Maps produced during this study will be used to define transverse structures in the ridge (the geometry of half graben bounding faults and transfer zones) and the morphology of the AMOR. The regional lines will also be useful for studies of isostatic compensation of both the Lomonosov Ridge and the AMOR as well as defining he transition from the Lomonosov Ridge to the adjacent enigmatic Alpha-Mendeleev Ridge.